1. Department of Electrical, Electronic and Information Engineering, University of Bologna, Bologna, Italy
2. CIRI-ICT, niversity of Bologna, Bologna, Italy
3. Cyber Security Division, Broadband Solutions Engineering, Leonardo S.p.A., Florence, Italy
4. Leonardo S.p.A., Genova, Italy
5. Leonardo S.p.A, Rome, Italy
6. Department of Computer Science and Engineering, University of Bologna, Bologna, Italy